Chrysler Repair: low pressure AC service port 94 Grand voyager, grand voyager, ac service


Question
QUESTION: The Chrysler shop manual states, the Low pressure "suction" AC service port is located near the radiator overflow bottle. Is there a mistake in IDing the low and high side in the 1994 manual?

I think that is the high pressure side, as that service port is the larger sized quick disconnect .  Is the low pressure AC service port near the firewall? Because that port is the smaller quick disconnect port. ( which fits the recharge line that I purchased at Kragen )  

So the question is, on my '94 Grand Voyager, where is the low pressure AC service port located?  near the radiator overflow bottle ( as the manual states , or near the firewall, as that is the only port that fits the recharge hose - low pressure )



ANSWER: u cant mix the low and high side up  the port will only go on the low side  the high side is bigger

---------- FOLLOW-UP ----------

QUESTION: I have a question about the Low press readings.  When the AC compressor is not running, the pressure is 45-50 psi.  When the compressor engages, is the pressure suppose to drop?  Cuz mine drops to below 5 psi, and of course the compressor cuts out due to the low pressure/ low refrigerant?.   

I then bypass the low pressure cut out switch, and try to rechage the system with refrigerant.  Service  Manual states to achieve 25-35 psi,  but is that suppose to be a psi reading with the compressor running?  cuz when the compressor is not running, I get a low pressure reading of 50-60psi.  

I stopped recharging, as I did not notice any cold air starting to come out of the air ducts. When compressor engages, low pressure is now at about 8-10 psi ( I still need the jumper to get the compressor to stay on.  If I don't use the jumper, compressor only cycles on for 2 secs, then off for about 10 secs, before cycling on for another 2 secs...etc... )

So the question is....is the low pressure reading suppose to be with the compressor running?  As stated earlier, with compressor off, low pressure reading is about 50psi.

Answer
ac not on  low and high are equal  around 100.
Running low 30 to 60  high  200 to 300.
IF u start it up and see the low side go to 5 or below  u have low freon or a low side restriction some where.I live in the Atlanta area I would be glad to look at it for u.